The Generic Repository (grepo) is a framework for Java which allows you to access (database) repositories in a generic and consistent manner. Using grepo, it is generally no longer required to provide all the boilerplate code which is necessary in order to access (database) repositories from Java. All you have to do is write appropriate database code (queries, procedures, functions, etc.), an appropriately annotated Java interface, and very little Spring configuration.

Tranche is file storage and dissemination software. Designed and
built with scientists and researchers in mind, Tranche can handle
very large data sets, is secure and scalable, and all data sets are
citable in scientific journals. Features include a fully decentralized
architecture, support for very large files, very long-term file
persistence/preservation, file immutability/integrity, provenance,
encryption, licensing, versioning, and citability.

Boar provides simple version control and backup for photos, videos, and other binary files. Boar aims to be the perfect way to make sure your most important digital information, like pictures, movies, and documents, is stored safely. It makes it possible for you to restore any or all of your files from any point in time. It makes it easy to maintain verified backups of your data, including file history. It imposes no limits on file or repository sizes. Using boar is an effective way to prevent data loss due to human or machine error.

pepper is a commandline tool for retrieving statistics and generating reports from source code repositories. It ships with several graphical and textual reports, and is easily extensible using the Lua scripting language. It includes support for multiple version control systems, including Git and Subversion.

OPUS is a repository software. OPUS can archive electronic documents to make them available for users to search, to browse, and to simplify the publishing process. OPUS is one of the most frequently utilized repository management systems in German libraries.

bfsync is a file-synchronization tool that allows you to keep a collection of big files synchronized on many machines. It is built around a FuSE filesystem, so repositories can be mounted and the contents can be viewed and modified via the mount point. A collection of commands like commit/push/pull/put/get can be used to control bfsyncs behaviour, and trigger data / history transfers between machines. In addition to synchronizing files between many machines, bfsync can also be used to store backups.